why does my Honda Accord make a clunking noise when shifting

Honda Accord 9th Generation (2013-2017)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

537 words

Problem Statement

Learn how to diagnose and fix clunking noise during gear shifts in Honda Accord. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure the vehicle is securely supported on jack stands before working underneath.

Symptoms

•Clunking noise heard during gear shifts
•Harsh or delayed shifting
•Vibration felt in the cabin during acceleration
•Unusual noise when accelerating or decelerating
•Check engine light may be illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related codes.
2
Inspect transmission fluid level and condition; look for discoloration or burning smell.
3
Check for any visible leaks around the transmission and differential.
4
Visually inspect the driveshaft and CV joints for wear or damage.
5
Test engine and transmission mounts for excessive play or wear.
6
Assess the condition of the clutch (if manual) or automatic transmission components.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Torque wrench
•Drain pan
•Funnel

Parts Required

•Transmission fluid (Honda ATF-Z1 or DW-1)
•Engine/transmission mounts (if needed)
•CV joint assemblies (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related codes.
2
Inspect transmission fluid level and condition; look for discoloration or burning smell.
3
Check for any visible leaks around the transmission and differential.
4
Visually inspect the driveshaft and CV joints for wear or damage.
5
Test engine and transmission mounts for excessive play or wear.
6
Assess the condition of the clutch (if manual) or automatic transmission components.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Disconnect the negative battery terminal to ensure safety.
Raise the vehicle securely on jack stands.

2. Inspect and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission fluid drain plug and place a drain pan underneath.
2. Remove the drain plug and allow the fluid to fully drain.
3. Replace the drain plug, ensuring it is tightened to the manufacturer's torque specifications (typically 20-25 ft-lbs).
4. Remove the transmission fluid fill plug and add new transmission fluid using a funnel (refer to owner’s manual for the specific type, typically Honda ATF-Z1 or DW-1).
5. Start the engine and let it run for a few minutes, then shift through all gears to circulate the new fluid.

3. Inspect and Replace Engine/Transmission Mounts

Sub-steps:
1. Locate the engine and transmission mounts; visually inspect for cracks or excessive wear.
2. Remove the bolts securing the defective mount using a socket set.
3. Replace with new mounts, ensuring they are aligned properly and torque bolts to specifications (usually around 40-50 ft-lbs).
4. Reconnect the negative battery terminal.

4. Inspect Driveshaft and CV Joints

Sub-steps:
1. Remove the wheels to access the CV joints and driveshaft.
2. Inspect CV boots for cracks and check joints for play.
3. If damaged, remove the affected CV joint by removing the retaining clips and bolts.
4. Replace with new CV joint assemblies and reassemble, ensuring all components are secured.